Here is a wartime poster that asked citizens to save bones and turn them in. To make glue to use in housing, fertilizer for growing food, and for other things such as soap making. All of this of course helped in the war effort at home.
I often wonder if there were similar campaigns today that showed people what one recycled item could make, if they would be successful. We all know about recycled paper and aluminum and things like that, but this is definitely interesting. Do they still use bones for glue? And how is it used in soap?
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